Hydraulic nozzle.



W. A. DOBLE. HYDRAULIO NOZZLE. APPLIUATIOH IILED OU'f. 17, 1903.

Patented June 22,1909.

UNITED STATES PATENT OFFICE.

WILLIAM A. DOBLE, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR T0 MAY E. DOBLE.

HYDRAULIC NOZZLE.

Specification of Letters Patent.

Patented June 22, 1909.

Application led October 17, 1903. Serial No. 177,447.

To all whom 'it may concern:

Be it known that I, IViLLIAii A. DoBLna citizen of the United States, resi-ding at San" v Francisco, county of ban Francisco and State.. of California, have invented certain new and useful Improvements in Hydraulic Nozzles; and I hereby declare the following to be a full, clear, and exact description of the same, reference being had to the ace companying drawings. forming a part of this specification. l

My invention relates to in'iproveinents in that class of hydraulic apparatus `Where the motor powei` is the energy of a jet of water which is caused to operate upon the part to be inoved, as for instance a bladed wheel, and has for its object to adapt the apparatus to'ceitain varyingv conditions with the purpose of avoidingwaste ot water and interferences with the normal llow thereof to other stations when required.

Under some circumstances, as in certain States and Territories of the United States where the water supply .is derived from small streams at high elevations, there are restrictions as to the use of such streams at a' point that will `interfere with the natural tiow to a station below, such use being prohibited by law or custom; and there are natural variations resulting' from the fact that during certain portions of the day the supply is abundant, while at other times it is tgreatly reduced. Il nder nearly all of the diti'ereiit conditions the water supply is more or less limited and requires to be used economically, and it is also further required to vary the energy or character of the stream used in i'oportion to the load.

In or er to provide an appa 1atus adapted to thesevarious conditions, I make use of a nozzle and means whereby the stream or jet therefrom may be so changed in relation to the wheel or other Iobject driven thereby that the power applied to the driven object may be quickly varied by a change of the direction ofthe stream to compensate' for the variations of the load; and I also provide means whereby the discharge outlet of the nozzle may be varied, yeither in accordance with the varying amount of the supply, or in accordance with the major variations of the load .demanding a greater or less amount of energy in the actuating jet.

IVhile my apparatus may be embodied in different constructions, I have shown in the drawing one forni in which it may be effectively employed, wherein the tangential water wheel 1 is mounted in a casing 2 over a pit 3 and driven by water from a nozzle 4 the water from which iinpinges Atangentially against the buckets 5. This nozzle 4 is'provided with a core piece 'T approximately of spindle form as describedin Letters Patent No. 660,789, granted to ine on the 30th day of October, 1900, for an improvementin hydraulic regulating' nozzles; This' core piece 7 is operated by a stein 8, tangent wheel 9 and a screw on the end of the vert-ical shaft 10, asiindicated in Figure I. By means of these last iiained devices and a hand wheel 12 jat-.the top, the stem 'S and core piece 7 are advanced and drawn back, enlarging yor conttiacting the escape oritice of the nozzle et so ils to pass a sutticieut quantity of water to l u tperate the wheel 1 against its maximum l" ad or resistance, or more than this quantity if required. These devices .regula-te. the volume of water that passes through the nozzle and require iiitrcquent adjustment so longas the water wheel is performing a nearly constant duty and the supply of wat-er remains the saine, but do not provide for regulation of speed of the water wheel or for fluctuations of its load, and could not d o so because abrupt or sudden changes of the volume ot' water and flow in the supply pipe 13 is not practicable in the case of high pressures and long pipes such as are conni'ionly employed for tangential water wheels.

To effectregulation of the speed and power of the wheel 1 the nozzle L1 is pivotcd at 14 and has a spherical joint of the usual constructionso the nozzle can' be moved upward or down 'ard to deflect the jet of water as indicated by the lines a and e in FionI. Injthis manner it will be seen that the impact is nearer to or farther from the cen'ter and that more or less of the section of the liet will iniping'e upon or within the buckets 5 and the remainder will pass'on .without eifect, the volume of water and its rate of. flow reniaiiiing` the same when adjustedA by means ot' the hand wheel 12 as before explained.

Tp move the nozzle 4 upward and downward I employ any suitable regulating or governing mechanism, preferably a hydraulic cylinder having a 17 attachedto .the piston rod 18 and operatinga toothed sector 1l) on the shaft 20, andon the' en d of this latter a crank 22 and a vlink-23 that extends to and operates the shafii'iSO'and toggle gearing 24 below and connected to thenozzle 4asshowninFigI. Y a

The ldistribution of water to thei hydraulic cylinder 15 is performed by a balancedl slide' shaft 29 or other mover positively connected thereto.

I' do not particularly describe the construction of these regulating'devices because they 'are well known as an article of separate manufacture, are commonly applied to Water wheels arid capable of modification to meet thel requirements in different cases.

The toggle gearing at v24 is provided to equalize'thc resistance in moving the nozzle, also to provide rfoom laterally for the link 23 by means of the shaft 30, as shown in Fig. II.- Toraise or-lower the nozzle independently of the automatically acting devices just described I provide a hand wheel 32 and screw 33 attached to a loose crank 34.0n the shaft 20.l '1 -his crank 34e connects to the shaft 20 luy-'means of a shifting clutch 35 operated by va lever 37 so as to be thrown nt'o'ge'ar when required and detached when the regulator is in regular operation.

I "rawing is made to a scale of one in 15, and the example talen from a water Wheel of `A stop valve 38 operated by a hand wheel '39"1s'-placed inthe supply pipe 13 andall the l,operating parts requiring adjustment are :geessible from a' platformk 40. The present 1300 horse power operating undera head of 1,900 feet.

The housing 2, main frame 42, journal bearings .43, and'inain shaft are of the usual construction and will be understood without description.

Itwillbe Seen that in order to properly operate the valve or control device, whatever it may be, that regulates the flow through the end of the nozzle, I .have imparted a bend to the latter, so that the actuatingstem of the said device may be carried through the side of the nozzley and thus avoid the necessity of obstructing the iow through the,

in combination therewith, devices separatelyv adjustable within the nozzlefto'fontrol the volume of water discharged "therethrough,

, substantially as described.

2. In combination with a pivoted nozzle of the character described, means for adjusting said nozzle on its pivot, and instrumentalities forregulating the cross-sectional area of discharge from the nozzle,said instrumentalities being carried by and within the nozzle and free to move therewith whereby the same may be adjusted irrespective of the lposition of the nozzle, substantially as described.

3. In combination with an impactA wheel andits buckets of a nozzle of the character described, primary means whereby an approximate adjustment may be given said nozzle -tovary the position of the stream discharged therefrom, and secondary means within the nozzle for regulating the crosssectional area ofthe stream to correspond withthe adjustment of the strearns position.

4. 1n combination with a pivoted nozzle mounted to swing in a vertical plane and of the character described, automatic means for adjusting said nozzle on its pivot, and instrumentalities for regulating the cross-sectional area of discharge from the nozzle, said instrumentalit-ies being carried by and Within the nozzle and free to move therewith whereby the same may be adjusted irrespective of the position of the nozzle. l

5. In combination with an impact wheel and its buckets-0f a single discharge nozzle of the character described, primary means whereby an approximate adjustment may be given said nozzle to vary the position of the stream discharged' therefrom and -secondary means within the nozzle for regulating-the -cross-sectional area ofthe stream to correspond with the adjustment ofthe streams position, substantially as described. 1

6. The combination with an im act wheel Vand its'buckets of a line of supp y pipe, of

ing the nozzle in accordance with the load variations, and means adjustable within the nozzle whereby the outlet area for the stream ejected from the nozzle is'varied to meet the requirements 'of the load or supply changes.

'7. The combinationwith an impact'wheel land its bucket-sand a nozzle, of means for raising or lowering the same proportionate to the load variations, and means within the nozzle for varyingl the streams areafvin accordance with the variation of the Water supply.

8. The combination with an impct Wheel' mime to thls specitcatlon in the presence of and its buckets of a hinged and bent nozzle und with menne for automatically Swinging said nozzle.y ot' means within the nozzle for controlling the flow through the nozzle at a loint beyond the curve thereof.

11 testmonyvwhereof I have signed my two subecribing Witnesses.

WILLIAM A. DOBLE. Witnesses:

P. W. J. LANDER, ALFRED A. ENQUIsT. 

